Wrenn, Wilbur Hopkins2022-05-242022-05-241941http://hdl.handle.net/10919/110231The purpose of this investigation may be summarized as follows: (1) Search for new colorimetric organic reagents. (2) Discovery of any organic compound that shows properties of an indicator. (3) Discovery of any organic compound that shows properties of an oxidizing or reducing agent. (4) Discovery of any other information that may be of analytical importance.4 unnumbered pages, 39 leavesapplication/pdfenIn CopyrightLD5655.V855 1941.W746Colorimetric analysisIndicators and test-papersOrganic compoundsPart I, A search for organic compounds as colorimetric analytical reagents for inorganic ions ; Part II, Bz.2 oxybenzanthrone as an acid-base indicatorThesis